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  5. 當歸補血湯對鐵吸收之影響
 
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當歸補血湯對鐵吸收之影響

Other Title
The Influence of Danggui Buxue Tang on Iron Absorption
Type
thesis
Date Issued
2010-07-06
Author(s)
陳詩瑜
Advisor
王靜瓊
Subjects
系所名稱:生藥學研究所
Description
學位別:碩士
語文別:中文
指導教授:王靜瓊
共同指導教授:
口試委員:蔡東湖;戴承杰
中文關鍵字:當歸補血湯;鐵;鐵蛋白;Caco-2;血紅素濃度再生率
Abstract
缺鐵性貧血為貧血分類中盛行率最高的疾病,造成缺鐵性貧血的原因有鐵吸收不良、攝鐵不足、失血過多等,在醫療發達的現今缺鐵性貧血仍是急待解決的問題;而當歸補血湯組成為當歸及黃耆,是傳統醫學之補氣生血方劑。因此本研究利用當歸補血湯與鐵併用治療缺鐵性貧血,以探討古籍上所稱「補血」,是否與治療缺鐵性貧血有關,並觀察當歸補血湯與鐵劑,中西藥合併使用之療效。

首先利用Caco-2細胞攝鐵模式,檢測當歸補血湯使鐵蛋白(ferritin)生合成之影響,結果顯示:當歸及黃耆單獨使用不會增強鐵蛋白形成,而當歸補血湯則具劑量依存性的促使鐵蛋白形成,且其指標成分阿魏酸(ferulic acid)亦具有促進鐵吸收之作用。繼而探討當歸補血湯與鐵合併使用及間隔使用探討當歸補血湯對鐵吸收之影響,結果顯示:當歸補血湯與鐵併用時,當歸補血湯對於鐵吸收有抑制作用,與鐵間隔使用時則顯著具促進鐵吸收之作用;最後再以大鼠血紅素再生法探討體內之療效,結果顯示當歸補血湯與鐵經口服併用也會抑制鐵之吸收,而當歸補血湯本身即具促使血紅素上升之作用,且由血紅素再生率(HRE)可得知當歸補血湯中的鐵含量為37.6 mg/g,其生體可用率高達1947%。

利用植物化學成分分析發現,當歸補血湯中含酚類化合物(6.51 mg/g)、縮合型丹寧化合(2.31 mg/g)及皂苷類化合物(34.48 mg/g);而由總二價鐵分析結果中,鐵與當歸補血湯反應後之二價鐵含量減少,推測當歸補血湯中成分如酚類、縮合型丹寧與鐵形成不溶性沉澱物而阻礙鐵吸收。另外,以西方點墨法分析蛋白質表現,亦發現當歸補血湯可以活化DMT-1蛋白質表現量,推測其為促使鐵吸收增強的機轉。

綜合結果:當歸補血湯單獨使用時,利用在體內、外試驗,皆顯示其具促進鐵儲存利用之作用,顯示當歸補血湯可應用於缺鐵性貧血患者。但當歸補血湯與鐵劑同時服用時,會抑制鐵之吸收,若間隔使用,則可增強鐵之吸收。因此建議當歸補血湯要與鐵劑合併治療缺鐵性貧血時,要先服用當歸補血湯活化DMT-1,再服用鐵劑會使鐵劑吸收之效果增強。
URI
https://203.71.86.71/handle/123456789/13135

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